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I pressure tested the carbs during rebuild. Replaced crank seals, but definitely should have pressure checked engine too. I spoke with Tim Judge at Judge Motorsports in Dallas, but he is at least a month out since he is building race machines currently. Anyone had Tim Judge do work for them...

I flushed the crank. Replaced the crank seals. Rehoned cylinders. New pistons. Rebuilt both carbs. Back piston has the majority of the damage. This is the same piston that went out before the rebuild. Most damage is by the exhaust port side of the piston dome: A. Too low octane gas? run 93 B...

Does anyone have a recommendation for a repair shop in Dallas, TX area that has experience working on modified skis? I am getting ready to start my second rebuild on a 2009 Superjet with a 760 big bore set up and have not isolated the reason for my second set of blown pistons this summer. I...

Does anyone have a recommendation for a repair shop in Dallas, TX area that has experience working on modified skis? I am getting ready to start my second rebuild on a 2009 Superjet with a 760 big bore set up and have not isolated the reason for my second set of blown pistons this summer. I...

760 big bore kit (Kommnader Industries) B Factory Pipe Kommander industries flame arrestors

It appears to be flush with the kidney plate. if I have the problem when I reinstall the carbs on Friday, I may try bending the lever arm down a little. I know bending the leaver arm down (more pressure on the spring) will also increase my pop off pressure (which is already at 48 on both...

Checked with pop-off gauge: 48 psi on front and rear carbs. Also, placed new check valves on fuel pump today in case I accidentally flipped them over during the rebuild (per Mikuni concave side is suppose to be towards pump body). I intend to put the ski back in the water on Friday, but wanted...

Fuel is spraying (not dribbling) into the rear carb at idle and low RPMs causing the rear spark plug to foul. 2009 Superset (760 big bore kit) with dual 38mm Mikuni carbs. I recently pulled the engine due to a blown rear piston. Flushed the crankcase. Placed new crank seals. Re-honed the...